suspend_to_idle 1813 drivers/gpu/drm/i915/i915_drv.c opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold; suspend_to_idle 1833 drivers/gpu/drm/i915/i915_drv.c if (suspend_to_idle(dev_priv))